Kickover tool and selective mandrel system
a selective mandrel and tool technology, applied in the field of kickover tools, can solve the problems of inability to know for certain whether the kickover tool is working or not, damage or otherwise render it inoperable, and the operator never knows for certain if the kickover tool is working
Inactive Publication Date: 2008-11-18
SCHLUMBERGER TECH CORP
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- Application Information
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Benefits of technology
[0009]A kickover tool in accordance with the present invention further comprises a spring-loaded dog which is cooperatively attached to the housing. The spring-loaded dog comprises a plurality of compression springs and also has inner and outer circumferential surfaces. The inner circumferential surface of the spring-loaded dog engages the slider bar when the compression springs are compressed and assists in preventing the slider bar from moving.
Problems solved by technology
A tool striking the flow control device could damage or otherwise render it inoperative.
The damaged flow control device would then have to be replaced, which an expensive and time consuming process during which the well would not be producing.
One shortcoming associated with prior art kickover tools and side pocket mandrels is that no mechanism has heretofore existed to discriminate one side pocket mandrel from another, and the operator never knows for certain if the kickover tool is located at the appropriate side pocket mandrel when running the kickover tool into the bore.
Another shortcoming associated with the prior art is the problem of being able to run and retrieve gas lift and waterflood valves in high angled deviated wells.
Method used
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[0026]It will be appreciated that the present invention may take many forms and embodiments. In the following description, some embodiments of the invention are described and numerous details are set forth to provide an understanding of the present invention. Those skilled in the art will appreciate, however, that the present invention practiced without those details and that numerous variations from and modifications of the described embodiments may be possible. The following description is thus intended to illustrate and not to limit the present invention.
[0027]With reference first to FIG. 1, there is illustrated a kickover tool 10 in accordance with the present invention. Kickover tool 10 comprises a housing 11 which is generally tubular-shaped and slider bar 12. Slider bar 12 is inserted in housing 11 and is attached to housing 11. As illustrated in FIGS. 1 and 5, the attachment of slider bar 12 to housing 11 is made in one embodiment by using two sets of shear screws 14 and 15,...
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A kickover tool is disclosed for installing and retrieving a well flow control device from a side pocket mandrel in a wellbore. The kickover tool includes a spring-loaded key which has an outer circumferential surface having a predetermined machined pattern formed therein. Each side pocket mandrel in the tubing string contains a profile having a predetermined machined pattern. The spring-loaded key will engage the side pocket mandrel with a profile matching the pattern on the outer circumferential surface of the spring-loaded key. When that engagement occurs, the articulated arm of the kickover tool is permitted to be deployed to insert a well flow control device in the side pocket of the side pocket mandrel.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]This invention relates to a kickover tool for use in installing apparatus, e.g. valves, in side pocket mandrels and for retrieving such apparatus.[0003]2. Description of the Prior Art[0004]Side pocket mandrels are used extensively in producing oil wells in connection with operations such as gas lift operations. These type mandrels are adapted to accommodate not only gas lift valves, but also various types well flow control devices, such as check valves, plugs, pilot valves, orifice valves, chemical injection valves, dummy valves, waterflood regulating valves, and control valves for various functions. These mandrels are referred to as “side pocket” mandrels, because the flow control device is housed in a pocket section that is offset from the main bore diameter. By having the offset pocket section, tools traveling up and down the hole are less likely to accidentally strike the flow control device. A tool striking the flo...
Claims
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IPC IPC(8): E21B23/03
CPCE21B23/03
Inventor JACKSON, ELIJAH D.LANE, MICHAEL S.MESSICK, TYSONBURNETT, III, KENNETH C.
Owner SCHLUMBERGER TECH CORP